Headliner/duct assembly and welding process therefor

摘要

A headliner/duct assembly for a vehicle is made by vibration welding the headliner and duct together or ultrasonically welding the headliner and duct of the assembly together. Parts made of materials that are incompatible for ultrasonic welding can be ultrasonically welded together by first adhering to one part compatible material that is compatible with the other part.